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Shell Refrigeration Oil S2 FR-A 68 is a premium ISO VG 68 compressor oil designed for ammonia (R717) and hydrocarbon (R290) refrigeration systems, delivering efficient lubrication, low deposits, and extended service life.

Shell Refrigeration Oil S2 FR-A 68 is a high-performance refrigeration compressor lubricant engineered for demanding industrial cooling systems using ammonia (R717) and hydrocarbon refrigerants such as propane (R290). Formulated with refined paraffinic base oils and advanced additive technology, it provides stable lubrication performance, improved system cleanliness, and enhanced energy efficiency in both commercial and industrial refrigeration applications.

In refrigeration systems, lubricant performance directly affects compressor reliability and system efficiency. Shell Refrigeration Oil S2 FR-A 68 helps reduce “light-end” oil carryover, limiting evaporator fouling and preventing oil thickening that can reduce heat transfer efficiency. It is widely used in refrigeration infrastructures supported by industrial maintenance and lubrication technologies from Mobil and TotalEnergies, particularly in cold storage, food processing, and large-scale industrial cooling facilities.

This ISO VG 68 refrigeration oil delivers excellent thermal and oxidation stability, allowing extended service intervals while minimising sludge and deposit formation within compressors. It performs reliably across a broad temperature range, including high compressor discharge conditions and evaporation temperatures as low as -30°C. This makes it suitable for rotary and reciprocating compressors in open, semi-open, and hermetic systems.

Shell S2 FR-A 68 is specifically compatible with ammonia and hydrocarbon refrigerants but is not suitable for CFC, HCFC, or HFC refrigerants such as R12, R22, or R134a. In industrial maintenance environments where precision lubrication systems from Molykote and cleaning support chemicals from CRC are used, it contributes to cleaner system operation and reduced maintenance frequency.

Key benefits include:

• ISO VG 68 refrigeration compressor lubricant for ammonia and hydrocarbon systems
• Improves system efficiency by reducing oil carryover and evaporator fouling
• Excellent oxidation stability for extended service intervals
• Minimises sludge and deposit formation in compressors
• Reliable performance from high discharge temperatures to -30°C evaporation conditions
• Suitable for rotary, reciprocating, and industrial refrigeration compressors
• Compatible with R717 (ammonia) and R290 (propane) refrigerants
• Supports improved energy efficiency and system reliability

Proper lubricant selection is critical in refrigeration systems to maintain cooling efficiency, reduce downtime, and extend compressor lifespan. Shell Refrigeration Oil S2 FR-A 68 provides dependable performance for industrial refrigeration applications requiring stable, long-term operation.

Contact our technical specialists today to select the right refrigeration lubrication solution for your system and operating conditions.